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Abstract

Disclosed is a Mil-Std-1553B communications handler software package that allows application programs that run under the Advanced Interactive Executive (AIX*) operating system to communicate with a Mil-Std-1553B subsystem from across a Multibus II** parallel system bus.

Country

United States

Language

English (United States)

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This is the abbreviated version, containing approximately
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AIX 1553 B Communications Handler

Disclosed is
a Mil-Std-1553B communications handler
software package that allows application programs that run under the
Advanced Interactive Executive (AIX*) operating system to communicate
with a Mil-Std-1553B subsystem from across a Multibus II** parallel
system bus.

The handler
software is a library of user interface subroutines
written in C language. The subroutines
allow user application
programs written at some high level language (e.g., C, ADA) to send
1553B commands to remote terminals on a 2553B data bus through a
Multibus II parallel system bus. The
operation is depicted in the
figure. The handler 10 sends programming
instructions in the form of
unsolicited messages across the Multibus II bus 12 through a device
driver. The Mil-Std-1553B I/O adapter
board 14 receives the
unsolicited messages and sends the proper 1553B command out to the
1553B data bus 16.

The handler
allows user applications to configure the I/O
adapter board 14 as bus controller or remote terminal on the 1553B
16. In either configuration, the handler
10 allows the application
programmer to:
1. Transfer data across the 1553B bus
from bus controller to remote
terminal.
2. Transfer data across the 1553B bus
from remote terminal to bus
controller.
3. Transfer data across the 1553B bus
from one remote terminal to
another remote terminal.
4. Simulate from 1 to 32 remote
terminals on the 1553 bus
simultaneousl...